[
https://issues.apache.org/jira/browse/CASSANDRA-4860?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13495915#comment-13495915
]
Vijay edited comment on CASSANDRA-4860 at 11/13/12 4:13 AM:
------------------------------------------------------------
Simple patch to fix the issue....
Looks like the issue is that we do Mesure (instead of MeasureDeep) which will
not measure the byte[] attached to the RK.
*-for-11.patch is for 1.1 and *.patch is for 1.2.
was (Author: [email protected]):
Simple patch to fix the issue....
Looks like the issue is that we do Mesure instead of MeasureDeep which will
actually measure the byte[] attached to the RK.
*-for-11.patch is for 1.1 and *.patch is for 1.2.
> Estimated Row Cache Entry size incorrect (always 24?)
> -----------------------------------------------------
>
> Key: CASSANDRA-4860
> URL: https://issues.apache.org/jira/browse/CASSANDRA-4860
> Project: Cassandra
> Issue Type: Bug
> Components: Core
> Affects Versions: 1.1.0
> Reporter: Chris Burroughs
> Assignee: Vijay
> Fix For: 1.1.7, 1.2.1
>
> Attachments: 0001-CASSANDRA-4860-for-11.patch,
> 0001-CASSANDRA-4860.patch
>
>
> After running for several hours the RowCacheSize was suspicious low (ie 70
> something MB) I used CASSANDRA-4859 to measure the size and number of
> entries on a node:
> In [3]: 1560504./65021
> Out[3]: 24.0
> In [4]: 2149464./89561
> Out[4]: 24.0
> In [6]: 7216096./300785
> Out[6]: 23.990877204647838
> That's RowCacheSize/RowCacheNumEntires . Just to prove I don't have crazy
> small rows the mean size of the row *keys* in the saved cache is 67 and
> Compacted row mean size: 355. No jamm errors in the log
> Config notes:
> row_cache_provider: ConcurrentLinkedHashCacheProvider
> row_cache_size_in_mb: 2048
> Version info:
> * C*: 1.1.6
> * centos 2.6.32-220.13.1.el6.x86_64
> * java 6u31 Java HotSpot(TM) 64-Bit Server VM (build 20.6-b01, mixed mode)
--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira
